All Calculators

Calculate the alcohol by volume (ABV%) of your home brew from the original and final specific-gravity readings: ABV = (OG − FG) × 131.25.

Work out how much salt to dissolve in water for a wet brine at your chosen salinity (salt = water × salinity / 100), in grams.

Work out how much ground coffee to use for any amount of water at your chosen brew ratio (1 : X), from strong 1:15 to mild 1:18.

Calculate the water needed for a given flour weight and baker's hydration percentage (water = flour × hydration%/100) for bread, pizza, and sourdough.

Convert cups, ounces, grams, ml and more — with ingredient-aware density for 15 baking staples.

Convert oven temperatures between Celsius, Fahrenheit, and gas marks — the three labelling systems found on ovens and recipes worldwide.

Work out the exact flour, water, salt, and yeast weights for any number of pizza dough balls using baker's percentages.

Scale any recipe up or down — enter an ingredient amount and your original and desired servings to get the rescaled amount and the scaling factor.

Work out how much water to use for any amount of rice at your chosen water-to-rice ratio — from 1.5:1 for basmati to 2.5:1 for brown rice.

Find out how long to roast a turkey at 325°F — enter the weight and whether it is stuffed to get the total roasting time in hours and minutes.

Convert fresh (cake) yeast to active dry yeast and instant yeast using the standard baking ratios (active dry = fresh ÷ 2.5, instant = fresh ÷ 3).

Estimate the calories you burn cycling using the MET method, from your body weight, riding speed, and ride length — plus the distance covered and the MET intensity.

Calculate your Basal Metabolic Rate using the Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle equation — plus your activity-adjusted daily calorie needs.

Estimate your body fat percentage using the US Navy circumference method.

Check your Body Mass Index for insights into your health.

Enter your body, your goal weight and how big a deficit you want. You get the daily intake, the weekly rate of loss and the week the goal arrives.

See how many calories any activity burns — by duration, distance, steps, or reps.

Estimate total body water and the free water deficit used to correct hypernatremia, from weight, patient group, and serum sodium.

Calculate the HOMA-IR insulin resistance index from fasting glucose and insulin, in mg/dL or mmol/L, with an interpretation band.

Enter your height and sex to see what the four standard ideal-body-weight formulas suggest — and how they compare with the healthy BMI range.

Enter your body, your activity and your goal to get a daily calorie target split into grams of protein, fat and carbohydrate.

Enter a set you actually completed and pick an equation to estimate the most you could lift once — plus the loads that estimate implies for training.

Solve any one of pace, time, or distance from the other two. Plan your race or training run.

Calculate prostate volume from three ultrasound or MRI dimensions using the ellipsoid formula, plus estimated gland weight and PSA density.

Estimate the calories burned rucking (walking with a loaded pack) using the Pandolf equation, from your body weight, load, speed, grade, terrain, and time.

Enter your age and, if you know it, your resting pulse. You get the beats per minute your chosen training zone actually means.

Enter your sex, age, weight, height and activity level to see the calories you burn in a day — and what to eat to lose, hold or gain weight.

Calculate your waist-to-hip ratio (WHR) and see your cardiometabolic risk band using the WHO 2008 cut-offs.